.container {
    width: 1200px;
    height:500px;
    margin: 110px auto 0px;
    /* border: 1px solid black; */
    position: relative;
    background: url(../../images/9.jpg) no-repeat center/1200px 800px;
}
.lg {
    width: 400px;
    height: 300px;
    background-color:rgba(223, 204, 204, 0.7);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(25%,-50%);
}
.nav{
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: center;
}
.nav li{
    width: 230px;
    display: flex;
    justify-content: space-between;
}
.nav li > input {
    border: 1px solid black;
}
.remember{
    position: absolute;
    top: 60%;
    left: 40%;
}
.btn{
    width: 50px;
    height: 25px;
}